JAMES BROWN/GERALD FORD
As a prolific singer, songwriter, bandleader, and record producer, Brown was a seminal force in the evolution of gospel and rhythm and blues into soul and funk. He left his mark on numerous other musical genres, including rock, jazz, reggae, disco, dance and electronic music, afrobeat, and hip hop music.
Gerald Rudolph Ford, Jr.
He was the first person appointed to the Vice-Presidency under the terms of the 25th Amendment, and upon succession to the presidency became the only president in U.S. history to fill that office without having been elected either President or Vice-President.